BackupPC is a high-performance, enterprise-grade backup system for backing up Linux, WinXX PCs, Macs and laptops to a server's disk. Features include clever pooling of identical files, no client-side software, and a powerful Apache/CGI user interface.

A free, open source, "on-the-fly" (OTFE) transparent disk encryption program. Using this software, you can create one or more "virtual disks" on your PC - anything written to which will be automatically, and securely, encrypted before being store

A free, open source, "on-the-fly" transparent disk encryption program. With this software, you can create one or more "virtual memory cards" on your PDA - anything written to which will be automatically, and securely, encrypted before being store